Oilpan: fix build after r368275.

third_party/WebKit/Source/core/inspector/InspectorCSSAgent.cpp

Index: third_party/WebKit/Source/core/inspector/InspectorCSSAgent.cpp
diff --git a/third_party/WebKit/Source/core/inspector/InspectorCSSAgent.cpp b/third_party/WebKit/Source/core/inspector/InspectorCSSAgent.cpp
index ccecc57674870b9c9e6280a61a886e4703f62505..e49567e8c600c24c9ee25e5cadec956b711fd187 100644
--- a/third_party/WebKit/Source/core/inspector/InspectorCSSAgent.cpp
+++ b/third_party/WebKit/Source/core/inspector/InspectorCSSAgent.cpp
@@ -974,7 +974,7 @@ void InspectorCSSAgent::getCSSAnimationsForNode(ErrorString* errorString, int no
 
         // Find CSSOM wrapper.
         CSSKeyframesRule* cssKeyframesRule = nullptr;
-        for (auto& styleSheet : *m_documentToCSSStyleSheets.get(ownerDocument)) {
+        for (CSSStyleSheet* styleSheet : *m_documentToCSSStyleSheets.get(ownerDocument)) {
             ASSERT(styleSheet->ownerNode());
             RuleSet& ruleSet = styleSheet->contents()->ruleSet();
             for (auto& rule : ruleSet.keyframesRules()) {